8216184: CDS/appCDS tests failed on Windows due to long path to a classlist file
Summary: use os::open() instead of fopen()
Reviewed-by: iklam, dholmes
/build/
/dist/
/.idea/
nbproject/private/
/webrev
/.src-rev
/.jib/
.DS_Store
.metadata/
.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
**/JTwork/**